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No, 4 has one prime factor.

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Q: Must a composite number have at least two different prime factors?
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Is a composite number times a composite number always composite?

Yes. To be composite, the first number has at least 2 prime factors, the second number also has at least prime factors; the product of the two will have at least 4 prime factors, so it must be a composite number.


Each composite number has a least blank factors?

at least three factors.


How factors does a composite number have?

At least three


What calendar dates have exactly two different factors?

None since 2014 is an even number so the date will be composite. Composite numbers have at least three factors.


Can a composite number not have three factors?

It must have at least 3 factors.


Why is 25 considered to be a composite number?

A composite number is a number that has at least 3 factors. (It can be evenly divided by at least 3 number.) 25 has 3 factors: 1, 5, and 25.


Is 45 a prime or composite number how do you know?

45 is a composite number. A number is composite if it can be evenly divided by and least 3 numbers (if it has at least 3 factors). Any composite number has at least one factor other than one and itself. 45 has 6 factors: 1, 3, 5, 9, 15, and 45.


Do composite numbers have to have three factors?

Yes, a composite number has to have at least one factor other than 1 and itself, so they have to have at least 3 factors.


Is a composite number a number that has only two multiples?

No, prime numbers have only two factors: 1 and itself. Composite numbers have at least 3 factors.


What is the different of prime and composite?

Prime numbers have two factors, composite numbers have more than two.


Differentiate prime numbers and composite numbers?

A prime number is a whole number that has only two distinct factors: 1 and the number itself. A composite number has at least three distinct factors.


How is a prime different from a composite numder?

Prime numbers have two factors, composite numbers have more than two.